$
*MAT_ELASTIC_PLASTIC_HYDRO
$1,2.3,0.13,3.2E-4,,-5.E-5,1.
$,,3
2,2.4,0.126,2.5E-4,,-5.E-5,0.4
,,3.
*EOS_GRUNEISEN
2,0.2500,1.0,0.,0.,1.9,0.0
0.,1.
$
$国际单位
*MAT_ELASTIC_PLASTIC_HYDRO_SPALL
$1,2.3,0.13,3.2E-4,,-5.E-5,1.
$,,3
2,2.4E+03,0.126E+11,2.5E+7,,-5.E+6,0.4E+11
,,3.
*EOS_GRUNEISEN
2,0.2500E+4,1.0,0.,0.,1.9,0.0
0.,1.
$
混凝土参数
喜德盛传奇700
密度 2.4g/cm剪切模量 12.6Cpa屈服应力 25Mpa抗拉强度 5Mpa失效应变 0.4
GRUNEISEN状态方程参数
C=2500m/s S1=1.0 S2=0 S3=0 ω=1.9 A=0 E0=0 V0=1
sdyyds混凝土随动硬化模型
*mat_plastic_kinematic
3 2100 3.00e+10 0.18 2.0e+07 0 0
0.002
*mat_plastic_kinematic
2 2600 4.75e+10 0.18 6.0e+07 4.75e+09 0
99.3 1.94 0.004
取自龚自明 防护工程 混凝土靶体尺寸及边界约束对侵彻深度影响的数值模拟
*MAT_JOHNSON_HOLMQUIST_CONCRETE
4,2.4,0.123,0.79,1.60,0.007,0.61,2.4E-4
2.7e-5,1.0e-6,0.01,7.0,8.0e-5,5.6e-4,1.05e-2,0.1
0.04,1.0,0.174,0.388,0.298
取自龚自明 防护工程 BLU-109B侵彻厚混凝土靶体的计算与分析
*MAT_JOHNSON_HOLMQUIST_CONCRETE
4,2.4,0.132,0.79,1.60,0.007,0.61,3.22E-4
3.15e-5,1.0e-6,0.01,7.0,1.08e-4,7.18e-4,1.05e-2,0.1
0.04,1.0,0.174,0.388,0.298
取自蔡清裕 国防科技大学学报 模拟刚性动能弹丸侵彻混凝土的FE-SPH方法
*MAT_JOHNSON_HOLMQUIST_CONCRETE
mid RO G A B C N FC
1, 2.2,0.164,0.75,1.65,0.007,0.61,4.4e-4
T EPS0 EFMIN SFMAX PC UC PL UL
2.4e-5,1.0e-6,0.01,11.7,1.36e-4,5.8e-4,1.05e-2,0.1
D1 D2 K1 K2 K3 FS
0.03,1.0,0.174,0.388,0.298
取自张凤国 爆炸与冲击《大应变。高应变率及高压下混凝土的计算模型〉
*MAT_JOHNSON_HOLMQUIST_CONCRETE
2,2.44,0.1486,0.79,1.60,0.007,0.61,4.8E-4
4.0e-5,1.0e-6,0.01,7.0,1.6E-4,0.001,8.0E-3,0.1
0.04,1.0,0.85,-1.71,2.08
取自宋顺成 爆炸与冲击 弹丸侵彻混凝土的SPH算法
*MAT_JOHNSON_HOLMQUIST_CONCRETE
1,2.4,0.1486,0.79,1.60,0.007,0.61,1.4e-4
4.0e-5,1.0e-6,0.01,7.0,1.6e-4,0.001,8.0E-3,0.1
0.04,1.0,0.174,0.388,0.298
*Mat_johnson_holmquist_concrete
$ 材料数据取自 1998 年 Johnson-Holmquist 会议论文, 失效采用拉伸失效============
$ MID RO G A B C N FC
1 2.25E-3 1.64E+04 0.75 1.65 -0.007 0.76 48.0
$ T EPS0 EFMIN SFMAX PC UC PL UL
2.4 1.0 0.01 11.7 13.6 5.8E-4 1.05E+3 0.1
$ D1 D2 K1 K2 K3 FS
0.03 1.0 1.74E+4 3.88E+04 2.98E+04
钢纤维混凝土
*MAT_JOHNSON_HOLMQUIST_CONCRETE
1,2.452,0.279,0.75,1.6,0.007,0.61,5.6e-4
8.2e-5,1.0e-6,0.015,10.5,2.3e-4,7.4e-4,1.05e-2,0.068
0.045,1.0,
*MAT_JOHNSON_HOLMQUIST_CONCRETE
1,2.55
1,0.332,0.79,1.6,0.007,0.61,7.17e-4
11.4e-5,1.0e-6,0.020,12.5,3.0e-4,8.8e-4,1.15e-2,0.070
0.050,1.0,
jzbai
H-J-C模型
该模型主要应用于高应变率、大变形下的混凝土模拟。在DYNA中H-J-C模型的定义方式为:*MAT_JOHNSON_HOLMGUIST_CONCRETE,材料编号为111。
H-J-C模型综合考虑了大应变、高应变率、高压效应,其等效屈服强度是压力、应变率及损伤的函数,而压力是体积应变(包括永久压垮状态)的函数,损伤积累是塑性体积应变、等效塑性应变及压力的函数。
下面是一个例子:
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$H-J-C g-cm-us
*MAT_JOHNSON_HOLMQUIST_CONCRETE
2,2.4,0.1486,0.79,1.60,0.007,0.61,0.00048
4e-5,1e-6,0.01,7.0,0.00016,0.001,0.0080,0.10
0.04,1.0,0.85,-1.71,2.08
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
敞篷跑车sdyyds
EPS0采用千克,米,秒是为1,
采用克,微秒,厘米是1.0e-6.
爬格子的人
*MAT_JOHNSON_HOLMQUIST_CONCRETE
2,2.4,0.1486,0.79,1.60,-0.007,0.61,0.00048
-4e-5,1e-6,0.01,7.0,0.00016,0.001,0.0080,0.10
0.04,1.0,0.85,-1.71,2.08,0.1
*MAT_ADD_EROSION
1,1234.0
-4e-5 ,234.0,1234.0,1234.0 ,1234.01234.0,1234.0
duanmengsun
我后来试试了,改*MAT_ADD_EROSION的第一参数对结果影响不大,但是如果设定第一主应力为失效变量(第二个参数),会产生径向裂缝的,但是很怪异,也不知对不对。
casio24
第一主应力取负值吗?取负值我的模型除外其他材料单元全部失效了。
没有了。
还有说主应力的时候是拉正压负吧?
爬格子的人
为什么添加拉伸破坏准则后,看不到结构的拉伸破坏,只是看到单元被拉长,但是不能删除单元呢?相反取掉拉伸破坏准则,则能看到断裂现象;如果定义拉伸不定义压缩破坏,则看到单元被拉长,但是没有提示单元被删除的信息!不知道是什么原因呢?同时定义了拉伸以后察看拉伸单元的信息,其应力值仍然是Fc,而不是T的值,由此可见,mat-111在960中并不完善,欢迎不吝指教!
lieut2003
看你有这么雄心壮志,我在提供一些资料,出成果记得共享一下,
To the best of my knowledge, Material Model 72 Mat_Concrete_Damage is an extension of Material Model 16 Mat_Pseudo_TENSOR due to Malvar, Crawford, Wesevich, and Simons, 'A Plasticity Concrete Material Model for DYNA3D,' Int J of Impact Engineering, Vol 19, Nos 9-10, pp 847-873, 1997
16 model:
*MAT_PSEUDO_TENSOR$ Mode II Concrete Model Option with automatic EOS2,2.247E-04,,0.2205000, -13.000E+07,0.200,6.000E+04,4.031E+06,0.000E+00,0.000E+00
$ 3rd example concrete that requires an equation-of-state (EOS)*MAT_PSEUDO_TENSOR3,2.247E-
04,,0.220500.,1.250E+03,0.333,6.667E-05,500.,1.50,1.25,0.7703.000E+07,0.200,6.000E+04,4.031E+06,0.000E+00,0.00
0E+000.000E+00,8.620E-06,2.150E-05,3.140E-05,3.950E-04,5.170E-04,6.380E-04,7.980E-049.670E-04,1.410E-03,1.970E-03,2.590E-03,3.270E-03,4.000E-03,4.790E-03,0.9090.309,0.543,0.840,0.975,1.00,0.790,0.630,0.4690.383,0.247,0.173,0.136,0.114,8.600E-02,5.600E-02,0.000E+00
lucyhulu
*MAT_CONCRETE_DAMAGE
4 2.6000000 0.2500000
5.5E-04 0.100E-04 0.0000000 0.1000000
0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000
0.20 2.1000000 0.3000000 3.350E-03 0.0000000 0 0
0.0000000 0.0000001 0.0000002 0.0000003 0.0000004 0.0000005 0.0000006 0.0000007
0.0000008 0.0000009 0.0000010 0.0000011 0.0000012
0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000
0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000
huangfei
这段话的意思是可以与*MAT_CONCRETE_DAMAGE配合使用的状态方程只能是 eos 8, eos 9 and eos 11 这几种
suiyuerufeng
*MAT_BRITTLE_DAMAGE
1 0.250E+04 3.000E+10 1.67E-01 6.00e+06 1.400e+07 1.40E+02 0.03
7.2389e+5 0.004E+00 2.100E+11 3.00E+06 1.00e+10 0.750e+00 3.20E+07
geneone
*MAT_JOHNSON_HOLMQUIST_CONCRETE
$H-J-C g-cm-us
$* mid ro g a c n fc
2 2.400000 0.148600 0.790000 0.007000 0.6100004.8000e-04
$* t eps0 efmin sfmax pc uc pl ul
4.0000e-051.0000e-06 0.010000 7.0000001.6000e-04 0.001000 0.008000 0.100000
$* d1 d2 k1 k2 k3 fs
0.040000 1.000000 0.850000 -1.710000 2.080000 -0.10000
sjy
张贴一种#72材料模型,#CONCRETE DAMAGE MODEL,该材料模型是我将近一年的研究成果,但还需要试验验证,有兴趣的朋友可以讨论一下。
下面是其K文件
*MAT_CONCRETE_DAMAGE
1 0.250E-05 0.200
0.189E-02 0.715E-02 0.460 0.300E-02
0.530E-02 0.671 0.873E-02 0.347 0.910E-02 1.25 1.00 10.0
0.00 206. 0.300 0.310 3.09 2.00 2.00
0.00 0.862E-05 0.215E-04 0.314E-04 0.395E-03 0.517E-03 0.798E-03 0.967E-03
0.141E-02 0.259E-02 0.400E-02 0.479E-02 0.909
0.00 0.834 0.940 0.990 1.00 0.790 0.469 0.383
0.247 0.136 0.860E-01 0.560E-01 0.00
*EOS_TABULATED
1 0.00 0.00 1.00
驾驶证年审0.00 -0.480E-03 -0.10536 -0.10542 -0.10547
-
0.10592 -0.10647 -0.11093 -0.11653 -0.12217
红旗hs7 2021款多少钱0.00 0.770E-02 0.800 0.804 0.808
0.839 0.877 1.18 1.56 1.93
黄龙600改装0.00 0.00 0.00 0.00 0.00
sdyyds混凝土随动硬化模型
*mat_plastic_kinematic
3 2100 3.00e+10 0.18 2.0e+07 0 0
0.002
*mat_plastic_kinematic
2 2600 4.75e+10 0.18 6.0e+07 4.75e+09 0
99.3 1.94 0.004
geneone
$岩石cm,g,us
*MAT_PLASTIC_KINEMATIC
$ MID R0 E PR SIGY ETAN BETA
1 2.50 0.225 0.22 3.0e-5 0.042 1.0
$ SRC SRP FS VP
0.06
$*MAT_PLASTIC_KINEMATIC
$ MID R0 E PR SIGY ETAN BETA
$ 1 2.7 0.4 0.22 0.460E-3 0.04
$ SRC SRP FS VP
$ 0.0000000 0.0000000 0.04
*MAT_ADD_EROSION
$ MID EXCL
1 1234
$ 拉力 第一主应力 等效应力 主应变 最大剪应变 SIGTH IMPULSE
1234 2.0e-4 1234 0.06 1234 1234 1234
花岗岩
$
*MAT_ELASTIC_PLASTIC_HYDRO
2,2.68,
砂岩
$
*MAT_
ELASTIC_PLASTIC_HYDRO
2,2.614,0.2828,
干沙
$
*MAT_SOIL_AND_FOAM
2 1.8E+0 6.385E-4 3.00E-1 3.4E-13 7.033E-7 0.30E+0 -6.90E-8
0.0
0.0 -1.04E-1 -1.61E-1 -1.92E-1 -2.24E-1 -2.46E-1 -2.71E-1 -2.83E-1
-2.9E-1 -4.0E-1
0.0 2.0E-4 4.0E-4 6.0E-4 1.2E-3 2.0E-3 4.0E-3 6.0E-3
8.0E-3 4.1E-2
$
空气
$
*MAT_NULL
3 1.293E-03 .0000000 .0000000 .0000000 .0000000 .0000000 .0000000
*EOS_LINEAR_POLYNOMIAL
3 .0000000 .0000000 .0000000 .0000000 .4000000 .4000000 .0000000
2.5e-6
$
TNT
*MAT_HIGH_EXPLOSIVE_BURN
1 1.637E+00 6.942E-01 1.891E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00
*EOS_JWL
1 3.712E+00 3.231E-02 4.150E+00 9.500E-01 3.000E-01 7.000E-02 1.000E+00
$
TNT
*MAT_HIGH_EXPLOSIVE_BURN
1 1.640E+00 6.930E-01 2.700E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00
*EOS_JWL
1 3.740E+00 3.231E-02 4.150E+00 9.500E-01 3.000E-01 7.000E-02 1.000E+00
$
粘土
$
*MAT_PLASTIC_KINEMATIC
2 1.8 4.738E-04 0.48 7.7E-05 1.601E-04 0.2
$
水
$
*MAT_NULL
2 1.025 0.00 0.00 0.00 0.00 0.00 0.00
*EOS_GRUNEISEN
2 0.148 2.56 1.986 0.2268 0.50 0.00 0.00
1.00
$
$$!钢壳的弹塑性流体带破坏材料参数(一级外壳)
*MAT_ELASTIC_PLASTIC_HYDRO_SPALL
4 7.860E+00 2.069E+00 1.724E-02 0.000E+00-7.030E+00 1.200E+00
0.000E+00 0.000E+00 3.000E+00
0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
*EOS_GRUNEISEN
4 3.574E-01 1.920E+00 0.000E+00 0.000E+00 1.690E+00 0.000E+00 0.000E+00
1.000E+00
$$
$
$SI8701
*MAT_HIGH_EXPLOSIVE_BURN
1 1.717E+03 7.980E+03 2.950E+10 0.000E+00 0.000E+00 0.000E+00 0.000E+00
*EOS_JWL
1 5.242E+11 7.678E+09 4.200E+00 1.100E+00 3.400E-01 10.82E+09 1.000E+00
$
$2号岩石
*MAT_HIGH_EXPLOSIVE_BURN
1 1.000E+03 3.600E+03 3.240E+09 0.000E+00 0.000E+00 0.000E+00 0.000E+00
*EOS_JWL
1 2.140E+11 0.182E+09 4.150E+00 9.500E-01 3.000E-01 7.000E+09 1.000E+00
$
$
粘土
$
*MAT_PLASTIC_KINEMATIC
2 1.8 4.738E-04 0.48 7.7E-05 1.601E-04 0.2
$
$
$$粘土
*MAT_ELASTIC_PLASTIC_HYDRO_SPALL
2 1.800E+00 1.601E-04 7.70E-05 0.000E+00-7.030E-06 1.200E+00
0.000E+00 0.000E+00 3.000E+00
0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
*EOS_GRUNEISEN f20c
2 0.250E-01 0.4E+00 0.000E+00 0.000E+00 2.10E+00 0.000E+00 0.000E+00
1.000E+00
$$
$
$$si粘土
*MAT_ELASTIC_PLASTIC_HYDRO_SPALL
2 1.800E+03 1.601E+07 7.70E+06 0.000E+00-7.030E+05 1.200E+00
0.000E+00 0.000E+00 3.000E+00
0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
*EOS_GRUNEISEN
2 0.250E+03 0.4E+00 0.000E+00 0.000E+00 2.10E+00 0.000E+00 0.000E+00
1.000E+00
$$
$
土的材料模型用那个比较好?? [Re:guofeng23]
--------------------------------------------------------------------------------
可以用弹塑性流体动力材料模型MAT_ELASTIC_PLASTIC_HYDRO.
参数为:土介质初始密度为1600kg/m^3,剪切模量为1.4e7pa,抗拉强度为 4.0e4pa,屈服应力为4.8e6pa,粘聚力为11.8e3pa,内摩擦角为19°。S1=1.0,S2=0.0,S3=0.0,Γ0=0.4,α=0.25,μ=0.133。(建议)
发布评论